PVC Junction boxes are surface mounted enclosures without entrance hubs which allows multiple conduits to be connected and wire splices to be made within. An appropriate round hole for conduit entrance must be cut. Terminal (male) adapters or junction box adapters may be used to secure conduits to the box. PVC Junction Boxes may be concrete encased or buried but not they are NOT warranted or listed to be watertight for all circumstances. This junction box is made to order and normally ships 1 to 3 business days after your order is received. Please call us if you need a specific shipment date at the time of your order, but we usually have 1 or 2 units of the 24 x 24 x 6 and 24 x 24 x 8 in stock and ready to ship. Junction boxes larger than 12" square can also be made in custom sizes up to 48" x 48" with screw cover, hinged covers, or a variety of other options. Call for a quotation if needed.